#include<bits/stdc++.h>
using namespace std;

int main()
{
	int n;
	cin>>n;
	if(n%3 == 0)
		cout<<3<<' ';
	if(n%5 == 0)
		cout<<5<<' ';
	if(n%7 == 0)
		cout<<7<<' ';	
	if(n%3 != 0 && n%5 != 0 && n%7 != 0)
		cout<<"n";
	return 0;
}
